Chair seat and back arrangement



1 14, 1931- w. s. FERRIS CHAIR SEAT AND BACK ARRANGEMENT Filed June 16, 1928 Patented Apr. 14, 1931 UNITED STATES WILLIAM S. FERRIS, OF 'ELKHART,

CHAIR SEAT AND BAoir AnRAnGnMEN'r 7 Application filed June 16,

This invention relates to improvements in chair seat and back arrangement and itconsists of the matters. hereinafter described and more particularly pointed out in the appended claim.

The primary object of the invention is to provide in a chair wherein the seat is mounted upon a spindle or post, a novel connection between said spindle and seat including a spider secured to the side margins of the seat which is there reinforced by angle strips upon which the back rest of the chair is mounted.

The above mentioned object of the invention as well as others together with many advantages thereof, will more fully appear as I proceed with my specification;

In the drawings Fig. 1 is a perspective viewof a chair seat and back arrangement embodying the invention as it appears when removed from the associated supporting legs or base.

Fig. 2 is a bottom plan View thereof on an enlarged scale.

Fig. 3 is a view in front elevation of the same. a

Fig. 4 is a detail vertical sectional view on a further enlarged scale as taken on the line 44 of Fig. 2.

Referring now in detail to that embodiment of the invention illustrated in the accompanying drawings, 1 indicates a chalr seat made of a laminated wood and of a width greater than its depthfrom front to rear. Said seat which has a depressed or convexed mid portion is flat at its side margins as best shown in Fig. 3.

Along each side margin of the chair seat 7 on the under side thereof, is secured in a manner later to appear, a metallic brace 2 which terminates short of the front edge of the seat. Each brace which is'in the form of an angle bar, comprises a horizontal flange 3 and a vertically depending flange 4 which is spaced a trifle outwardly from the edges of said flat margins of the seat. In said ver tical flange of each metallic brace is formed a plurality of longitudinally spaced openings 5.

The seat 1 is mounted upona post or spin- 1923. Serial No. 285,929.

dle 6 by means of a spider 7 preferably made from a single sheet metal stamping which includes a central body portion 8 and two pairs of laterally'extending, diverging arms 99. Punched downwardly from the central portion of saidspider body is an annular flange or collar 10 and in said flange'or collar 'is brazed or welded the top end of the seat post or spindle 6. Said post or spindle, so far as the invention is concerned may have either a threaded or smooth plain exterior surface, according to the type of base or standard with which it is to 'be used. :As shown herein, said post or spindle has asmooth plain exterior surface.

The arms of said spider which are bentupwardly from the body portion. of the spider are ribbed as at 11 for stiffness and rigidity and terminate in i flat ends that engage against the under sidev of the horizontal flanges 3 of the associated brace bars. Bolts '12 extend down through the lateral margins of .the seat and through the horizontal flanges 3 and flattened ends of the spider arms and a nut 13 is'threaded oneach bolt from the bottom endthereof. Each bolt has a smooth round head which when thenut is drawn up tight on the bolt not onlydraws said head slightly into the wood of the seat but securely clamps said seatancl braces to the spider. 7. By this arrangement, the bolt heads present no sharp edges to the clothing of the occupant of the chair and the parts are all securely connected together and the wood seat is held against splitting due to changes in atmospheric conditions. 1

In connection with the seat described, I provide a back rest and supporting means therefor which consists in a pair of side arms 14:1t each made of flat strip metallic stock. The bottom end of each side arm has a plurality of longitudinally spaced openings 15 therein, the desired one of which may be registered with the rearmost opening 5 in the brace bar flange 4: and then secured thereto by the bolt and nut 16. The top end of each side arm is offset inwardly as at 17 to be operatively connected to a bowed back rest member 18. The side arms are held in the desired rearwardly inclined position by means of curved braces 19'19 each pivoted at one end to the associated side arm as at 20 and each connected at its other end by a bolt and nut to the brace flange 4 in the desired opening 5 therein. The ease and manner in which the back rest member may be positioned with reference to the seat is readily apparent- By the arrangement described the metallic braces 2 perform a two fold function. They not only strengthen the wood seat so-that the margins cannot split but they also provide a firm base against which the arms ofthe spider are engaged and at the same time providethe necessary connection for the back rest supporting members 14 with the seat.

The parts described. are strong and rigid and are so correlated and arranged as to: be reduced in number to a minimum.

While in describing my invention I have referred in detail to the form and arraizige ment of the various parts thereof, the: same is. to be considered as by way of illustration only so that I do not wish to be limited thereto except as may be specifically set forth in the appended claim.

I claim as my invention In combination with a chair seat member, asupporting spindle therefor, a one piece spider fixed to said spindle and including pairs'of laterally extending arms, an angle her along each side of said. seat with its horizontal flange disposed between said seat and an associated pair of spider arms, and with its vertical flange depending downwardly and having openings therein, a pair of back rest supporting arms pivoted near their lower ends to the rear ends of said vertical flanges, a back rest member, carried by the top ends of said arms and a' brace operatively connected at one end to each arm and at its otherend operatively connected in one ofthe openings in said vertical flanges.

In testimony whereof, I have hereunto set my hand, this 12th day of June, 1928'.

' WVILLIAM S.= FE'RRIS. 

